Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 281 · 40 questions

The trick (Count the places): Forget the points and multiply the whole numbers. Count all the digits after the points in the question. Put the point that many places from the right, then check by rounding.

1. 1.0.77 × 0.2 — where does the decimal point go? (a) 0.0154 (b) 1.54 (c) 0.154 (d) 0.00154
2. 2.8.8 × 0.8 — where does the decimal point go? (a) 0.704 (b) 7.04 (c) 0.0704 (d) 70.4
3. 3.2.5 × 3 — where does the decimal point go? (a) 0.75 (b) 7.5 (c) 0.075 (d) 75
4. 4.5.7 × 3.2 — where does the decimal point go? (a) 1.824 (b) 18.24 (c) 0.1824 (d) 182.4
5. 5.5.3 × 2 — where does the decimal point go? (a) 10.6 (b) 1.06 (c) 0.106 (d) 106
6. 6.8.3 × 5 — where does the decimal point go? (a) 415 (b) 41.5 (c) 0.415 (d) 4.15
7. 7.8.1 × 0.6 — where does the decimal point go? (a) 4.86 (b) 0.486 (c) 0.0486 (d) 48.6
8. 8.0.53 × 3 — where does the decimal point go? (a) 0.0159 (b) 1.59 (c) 15.9 (d) 0.159
9. 9.3.2 × 9 — where does the decimal point go? (a) 0.288 (b) 2.88 (c) 28.8 (d) 288
10. 10.4.9 × 3.1 — where does the decimal point go? (a) 1.519 (b) 151.9 (c) 15.19 (d) 0.1519
11. 11.0.18 × 4 — where does the decimal point go? (a) 7.2 (b) 0.72 (c) 0.072 (d) 0.0072
12. 12.8.4 × 8 — where does the decimal point go? (a) 672 (b) 67.2 (c) 0.672 (d) 6.72
13. 13.6.7 × 0.3 — where does the decimal point go? (a) 2.01 (b) 0.201 (c) 0.0201 (d) 20.1
14. 14.7.4 × 4.9 — where does the decimal point go? (a) 0.3626 (b) 36.26 (c) 3.626 (d) 362.6
15. 15.4.5 × 3 — where does the decimal point go? (a) 1.35 (b) 0.135 (c) 135 (d) 13.5
16. 16.5.2 × 9 — where does the decimal point go? (a) 0.468 (b) 468 (c) 46.8 (d) 4.68
17. 17.0.74 × 0.4 — where does the decimal point go? (a) 0.0296 (b) 0.296 (c) 2.96 (d) 0.00296
18. 18.0.17 × 0.4 — where does the decimal point go? (a) 0.00068 (b) 0.0068 (c) 0.068 (d) 0.68
19. 19.0.84 × 4 — where does the decimal point go? (a) 0.336 (b) 3.36 (c) 0.0336 (d) 33.6
20. 20.0.12 × 48 — where does the decimal point go? (a) 0.0576 (b) 0.576 (c) 57.6 (d) 5.76
21. 21.9.8 × 1.6 — where does the decimal point go? (a) 15.68 (b) 156.8 (c) 0.1568 (d) 1.568
22. 22.4.8 × 0.8 — where does the decimal point go? (a) 0.0384 (b) 38.4 (c) 0.384 (d) 3.84
23. 23.9.3 × 3 — where does the decimal point go? (a) 2.79 (b) 0.279 (c) 279 (d) 27.9
24. 24.9.1 × 0.9 — where does the decimal point go? (a) 0.819 (b) 8.19 (c) 0.0819 (d) 81.9
25. 25.6.3 × 0.3 — where does the decimal point go? (a) 0.189 (b) 0.0189 (c) 18.9 (d) 1.89
26. 26.0.17 × 44 — where does the decimal point go? (a) 0.0748 (b) 74.8 (c) 0.748 (d) 7.48
27. 27.6.8 × 2.3 — where does the decimal point go? (a) 0.1564 (b) 1.564 (c) 156.4 (d) 15.64
28. 28.6.5 × 0.5 — where does the decimal point go? (a) 32.5 (b) 0.0325 (c) 0.325 (d) 3.25
29. 29.0.28 × 0.9 — where does the decimal point go? (a) 2.52 (b) 0.252 (c) 0.0252 (d) 0.00252
30. 30.0.22 × 37 — where does the decimal point go? (a) 81.4 (b) 8.14 (c) 0.814 (d) 0.0814
31. 31.0.59 × 7 — where does the decimal point go? (a) 4.13 (b) 41.3 (c) 0.413 (d) 0.0413
32. 32.2.6 × 39 — where does the decimal point go? (a) 101.4 (b) 10.14 (c) 1014 (d) 1.014
33. 33.2.2 × 22 — where does the decimal point go? (a) 4.84 (b) 0.484 (c) 484 (d) 48.4
34. 34.0.74 × 0.9 — where does the decimal point go? (a) 0.666 (b) 6.66 (c) 0.0666 (d) 0.00666
35. 35.4.7 × 3.3 — where does the decimal point go? (a) 155.1 (b) 0.1551 (c) 15.51 (d) 1.551
36. 36.7.2 × 3 — where does the decimal point go? (a) 0.216 (b) 2.16 (c) 21.6 (d) 216
37. 37.0.19 × 4.4 — where does the decimal point go? (a) 8.36 (b) 0.836 (c) 0.00836 (d) 0.0836
38. 38.1.4 × 0.6 — where does the decimal point go? (a) 0.0084 (b) 0.84 (c) 8.4 (d) 0.084
39. 39.0.92 × 2 — where does the decimal point go? (a) 1.84 (b) 0.0184 (c) 18.4 (d) 0.184
40. 40.1.4 × 43 — where does the decimal point go? (a) 60.2 (b) 0.602 (c) 602 (d) 6.02

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